beldina



4 Sheets-Sheet 1'.

(No Model.)

W. S. BELDING.

ARMATURE GORE FOR DYNAMO ELECTRIC MACHINERY.

Patented Dec. 18, 1888.

Witnesses Inven/(mt' (No Model.) 4 Sheets-Sheet 2 W. s. BELDING,ARMATURE' GORE FOR DYNAMO ELECTRIC MAGHINERY. No. 394,905.- PatentedDec. 18, 1888.

Witnesses: Inventor:

(No Model.) 4 Sheets-Sheet 3.

v w. s. BELDING. ARMATURE GORE FOR DYNAMO ELECTRIC MAGHINBRY. No.394,905. Patented Dec. 18, 1888.

T l "o'zn/essad': Inventor:

w PETERS. Pho\uulbogrupher, WlShlnglnlL 0.1-.

(No Model.) 4 Sheets-Sheet 4.

W. S. BELDING. ARMATURE GORE FOR DYNAMO ELECTRIC MACHINERY.

No. 394,905. Patented Dec. 18, 1888.

. Inventor:

M/. f4; a Q Iva/wk," W

N. PETERS. HMo-L'kho nphor. Wxhin im. D. C

UNITED STATES \VARREN S. BEIIDING,

PATENT times.

F CHICAGO, ILLINOIS.

ARMATURE CORE FOR DYNAMO ELECTRlC MACHHJERY.

SPECIFICATION forming part of Letters Patent No. 394,905, dated December18, 1888. Application filed January 24, 1888. Serial No. 261,779. Nomodel.)

' to be a full, clear, and exact description of the invention, such aswill enable others skilled in the art to which it appertains to make anduse the same, reference being had to the accompanying drawings, and toletters or ures of reference marked thereon, which form a part of thisspecification.

My invention relates to a blank for build- 1.

ing armatures for dyiiamo-clcctric machines and electric motors.

The object of the invention is to produce a blank with which may bebuilt interlocking segments or sections of an armature, which sectionswhen combined shall form an armature which is symmetrical throughtmt.The blank is cut in thin strips from sheets of material, and a number ofthem are united to form a section or segment of the armature,

and two or more sections are interlocked at their meeting ends toconstitute the armature.

Referring to the accompanying drawings, Figure 1 is a view of two of theblanks, one turned to the right and the other to the left. Fig. 2 is aview of said two blanks, one placed. upon the other. Fig. :3 shows arack used in building up the blanks with the blanks for one section ofthe armature upon it. of the armature, one being partially wound, anddotted lilies indicating how they are to be further wound. Fig. 5 showstwo of the blanks of another form. Fig. (1 shows said two blanks lyingone upon the other. Fig. 7 shows two segments forming the halves of anarmature built of the modified form of blank. Fig. 8 is a cross-sectionin line :i' .r of Fig. 7. Fig. 9 is a section through the interlockedmeeting ends of the segments after they have been united by a bolt.

An inspectitm of Fig. 1 will disclose a blank,

which is the half of a circle, and which is divided into spaces by fourequidistant holes, A, leaving between them the equal spaces B, andleaving at one end a short space, H, and

Fig. I shows two sections forming halves at the other cud a longerspace, B the sumot which last-named spaces is equal to one of the spaces1;). The spaces ll occupy a little more than the segment-spaces ot' thearmature, which are to be covered by the coils of wire. For the purposesof description I shall designate said spaces to he covered by the coilsas the bobbin-spaces. The space 13' is so much shorter than the spaces Bas to cause it to terminate opposite the adjacent hole coincident withthe bobbin-space The opposite end of the blank terminates at saidbobbin-space. It may be said that this blank is unsymmetrical. Althoughthe holes A are equidistant from each other, no two are equidistant tromthe center of the blank or from its ends. In other words, the group ofholes is shifted laterally from one cud ol' the blank toward the other.It two of the blanks are brought together with their dissimilar endsmeeting, B meeting 15*, a complete circle is formed, and said circle isdivided byeight equidistant holes into eight equal spaces, B and 15' 13:

For convenience in description I designate the holes A bythe serialnumbers 1 2 3 I, beginning with the hole next l3, and the spaces B bythe serial numbers 1 2 3, beginning next B. Nowit' the two blanks belaid upon each other, with similar ends in opposite directions and thehole I of the upper blank placed directly over hole 1 of the lowerblank, then holes I 2, and 1 of the upper blank will be directly overholes 2, 3, and l of. the lower blank. The spaces '1 2 of the upperblank will then lie over the spaces 3 2 1.. respectively, of the lowerblank, each ot. the spaces B being partially covered by the spaces ll,the remaimler of each of said spaces l3 being uncovered. haid uncoveredpart is equal to and coincident with the lmbbin-space of that part ofthe circle in the finished armature. In other words, it occupies one ofthe segmental spaces to be coyered by the coil. If we now apply upon theupper blank one that is re versed with reference to said upper blank andcorresponds in position to said lower blank, and then place upon thisthird blank a fourth corresponding to the second, we have a sufficientnumber of blanks to complete one-half of an armature, and the number ofblanks i may be 't'urthcr increased indefinitely. Pins or bolts may bepassed through the holes A to hold the blanks together during theoperation of winding. The bobbin-spaces between the holes may now bewound.

At each end of the half of the armature spaces will be left between theparts 13*. In bringing the ends of the halves of the armature togetherto form a complete circle the parts B of one-half of the arnrature passinto the spaces between the parts 13 of the adjacent end of the otherhalf of the armature,-

and the two blanks forming the same circle lie in the same plane andabut. \Vhen the two halves of the armature have been thus united, itwill be seen that the parts 13 have formed two bobbin-spaces which arenot yet wound with coils. These must then be wound by passing the wirethrough the armature; but the blanks may be so combined as to make allthe bobbin-spaces complete before the two halves of the armature areunited. All bobbin-spaces may, therefore, be wound before the halves ofthe armature are united. Upon this point attention is directed to Figs.5 and 6. In said figures the holes i, 3, and 2 of the upper blank areplaced over holes 2, 3, and at, respectively, of the lower blank. Thisbrings the parts B against spaces B and leaves the portions 13' and anequal portion of the adjacent spaces B uncovered. Blanks of the formshown in Fig. 1 may be applied to each other in this way. (See l.)

The total of the uncovered ends of the blanks constitute the parts thatinterlock, and they are between two bobbin-spaces in the finishedarmature. The portions of the armature between the b0bl)lllSpftC-GS arethe holes. In Figs. 5, (3, and T the poles are extended outwardly andthe extension designated by the letter C. Each of said extensions of thepoles is pierced by ahole, C, the purpose of which is, first, to form apole in the finished armature of relatively large surface and smallmass; second, to form an opening through the pole to afford ventilation,and thereby prevent heating. This feature will be further considered inanotherapplication for Letters Patent to be filed by me.

The operation of building up the blanks to form one-half of an armaturemaybe facilitated by using a device having two upright posts, D D,rising from a base, E, said posts being set from each other a distanceequal to the distance between two of the holes A A, and being passed,for example, through holes 2 and t of one blank and through 4t and 2 ofthe next, and again through 2 and at of the next, and so on. \Vhen theblanks have been thus built up, belts or pins F may be temporarilypassed through the holes A to bind said blanks together until the coilsG have been wound about the bobbin-spaces. By this arrangement of theplat-es the holes are brought over each other in the intermeshing polesor ends of the two halves of the armatures. Bolts H maybe passed throughthese holes to secure said ends, as shown in Fig. 9.

As already explained, the holes A are equidistant and pass through thepoles. The poles are there'l'fore also equidistant. All the poles of theentire circle may therefore be equally distributed, and of equal size;and it follows, also, that all the bobbin-spaces of the entire circleare equally distributed and of equal dimensions. The holes A beinglocated in the poles are not covered by the coils. Consequently thebolts or pins F uniting the blanks during the process of winding may beremoved at'ter the winding has been accomplished and used again. Anotheradvantage resulting from not covering the holes A by the winding is thatthey afford ventilation in the finished armature. Being formed in thepoles, said holes A reduce the mass of material in the poles, wherebythe magnetic el't'cct in the remaining massis intensified.

The holes, the poles, and the bobbin-spaces being thus respectivelyequal in distribution and dimensions, it results that there is astrictly even distribution of weight, pole-surface, and coils throughoutthe armature, and there is produced the highest possible degree ofregularity of current and smoothness of motion. A portion or all of theholes A and C are also to be used to receive belts or other devices tosecure the armature, through the medium of a spider, to the shaft uponwhich the armature is mounted. Said bolts may, however, be of lessdiameter than said holes A or C, in order that they may not fill all ofsaid holes, but leave them partially open for ventilation. In otherwords, the blank is to be cut with the holes larger than the bolts to beused, for the purposeabove mentioned.

The winding of the armature may be much more rapidly done before the twohalves are united. Vhen the armature is a full circle,

the winding must be done by passing the wire.

through the armature on a shuttle. If the separate halves are wound,they maybe treated like spools-namely, by rotating them to take thewire.

The blanks may, obviously, be thirds or quarters or other divisions of acomplete circle, provided theybe so spaced as to build up with. theirends abutting and form full and equal bobbin-spaces and poles.

The blanks are to be cut out of sheets of material, as already stated.This I intend to do by means of dies.

The claims hereto appended are to be understood to apply to the platesherein de scribed and not to the armature. The armature is embodied inan application filed by me February 2, 1888, Serial No. 262,705.

I claim as my invention 1. A sheetblank constituting a segment of acircle and divided into bobbin-spaces and poles, which are respectivelyequal in dimensions and equidistant from each other and located unsymmetrically on said blank, so that there is a bobbin-space at one endof the blank and a pole at the other end, substantially as shown anddescribed.

A sheet-blank constituting a segment of a circle and divided intobobbin-spaces and poles which are respectively equal in dimensions andequidistant from each other and located unsymmetrically on said blank,so that there is a bobbin-space at one end of the blank and a pole atthe other end, an d havi 11 formed in each of said poles a hole, A, forreceiving pins or bolts, for affording" ventilation, and reducingtlleniass ot the pole, substantially as shown and described.

3. A blank forming part of a circle and having equidistant poles withextensions C of equal dimensions, said poles being locatedunsynnnetricalb on said blank, so that there is a bobbin-space at oneend of the blank and a pole at the other end, substantially as shown anddescribed.

i. A blank forming part of a circle and having equidistant poles withextensions C of equal dimensions, and said extensions pro afforded andthe mass of. said pole is diminished, substantiallx as shown anddescribed.

5. A sheet-blank constituting a-segment ot' a circle and divided intobobbin-spaces and poles which are respectively equal in dimensions andequidistant from each other and located unsymmetrically on said blank,so that there is a bobbin-space at one end of the blank and a pole atthe other, and each of said poles being provided with an outwardextension, C, substantially as shown and described.

6. A sheet-blank constituting a segment of a circle and divided intobobbin-spaces and poles which are respectively equal in dimensions andequidistant from each other and lo cated unsynnnetricallv on said blank,so that there is a bobbin-space at one end of the blank and a pole atthe other, and each of said poles being provided with an outwardextension, t, and each such extension having formed in it a hole,substantizilly as shown and described.

7. A sheet-blank constitntinea segment of? a circle and divided into b ibbin-spaees and poles which are respectively equal in dimensions andequidistant from each other and located unsvnnnetrically on said blank,so that there is a bobbin-space atone end of the blank and a pole at the01 her end, and ha vineformed in each of said poles a hole, A, and eachof vided with holes C, whereby ventilation is i said poles having anoutward extension, and each of said outward extensitms being providedwith a hole, t", substantially as and for the purposes herein set forth.

In testimony whereof I altix m v signat ure in presence of twowitnesses.

\YARREN S. IEELDING. \V itnesses:

FRANK J. (Jauvronn, (.YRUs KEHR.

